Report for 398856

Name

WPP-DETROIT - Group M Worldwide, LLC, US

AS Adjacency Report

In the context of this report "Upstream" indicates that there is an adjacent AS that lines between the BGP table collection point (in this case at AS2.0) and the specified AS. Similarly, "Downstream" refers to an adjacent AS that lies beyond the specified AS. This upstream / downstream categorisation is strictly a description relative topology, and should not be confused with provider / customer / peer inter-AS relationships.

398856 WPP-DETROIT - Group M Worldwide, LLC, US

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS33668         CMCS - Comcast Cable Communications, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
77125 AS398856       ORIGIN  Originate:        256 /24.00  Transit:          0 /0.00  WPP-DETROIT - Group M Worldwide, LLC, US

Aggregation Suggestions

        Filter: Aggregates, Specifics

This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.

 Rank AS            AS Name                                      Current  Wthdw  Aggte  Annce Redctn       %
76447 AS398856      WPP-DETROIT - Group M Worldwide, LLC, US           1      0      0      1      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  209.90.42.0/24       4777 2516 7922 33668 398856   

Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.

AS398856   1 More Specifics   1 Total Advertisements   WPP-DETROIT - Group M Worldwide, LLC, US
    209.90.42.0/24                209.90.32.0/19

Whois Entry

whois: 402603

IANA has recorded AS398856 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS398856\n             
             #
             # ARIN WHOIS data and services are subject to the Terms of Use
             # available at: https://www.arin.net/resources/registry/whois/tou/
             #
             # If you see inaccuracies in the results, please report at
             # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
             #
             # Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
             #
             
             
             ASNumber:       398856
             ASName:         WPP-DETROIT
             ASHandle:       AS398856
             RegDate:        2020-10-01
             Updated:        2022-10-19
             Ref:            https://rdap.arin.net/registry/autnum/398856
             
             
             OrgName:        Group M Worldwide, LLC
             OrgId:          GMW-4
             Address:        175 Greenwich St
             City:           New York
             StateProv:      NY
             PostalCode:     10006
             Country:        US
             RegDate:        2008-04-22
             Updated:        2025-05-27
             Ref:            https://rdap.arin.net/registry/entity/GMW-4
             
             
             OrgTechHandle: WRTC-ARIN
             OrgTechName:   WPP RIR Technical Contact
             OrgTechPhone:  +020 3193 4892 
             OrgTechEmail:  RIR.Technical.Contact@wpp.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/WRTC-ARIN
             
             OrgTechHandle: BARTL198-ARIN
             OrgTechName:   Bartlett, Michael 
             OrgTechPhone:  +07900763881 
             OrgTechEmail:  michael.bartlett@wpp.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/BARTL198-ARIN
             
             OrgAbuseHandle: WRTC-ARIN
             OrgAbuseName:   WPP RIR Technical Contact
             OrgAbusePhone:  +020 3193 4892 
             OrgAbuseEmail:  RIR.Technical.Contact@wpp.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/WRTC-ARIN
             
             OrgTechHandle: MOKEN-ARIN
             OrgTechName:   Moken, Matthew 
             OrgTechPhone:  +1-732-856-2110 
             OrgTechEmail:  matthew.moken@wpp.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/MOKEN-ARIN
             
             OrgTechHandle: HERBE97-ARIN
             OrgTechName:   Herbert, Gavin 
             OrgTechPhone:  +447970314010 
             OrgTechEmail:  gavin.herbert@wpp.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/HERBE97-ARIN
             
             
             #
             # ARIN WHOIS data and services are subject to the Terms of Use
             # available at: https://www.arin.net/resources/registry/whois/tou/
             #
             # If you see inaccuracies in the results, please report at
             # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
             #
             # Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
             #